Piper PA-34-200T Seneca II Service Manual Download

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PIPER SENECA II SERVICE MANUAL

01/01/09

V - SURFACE CONTROLS

1G11

Place the aileron rigging tool as shown in Figure 5-4 against the underside of the wing and
aileron as close as possible to the center of the aileron without contacting any rivets. The tool
must be positioned parallel with the wing ribs and the aft end of the tool even with the trailing
edge of the aileron.

With the aileron control rod connected between the bellcrank and aileron, check that the
surface of the wing contacts the tool at its forward surface and at the spacer and the trailing
edge of the aileron contacts the aft end of the tool. The aileron is neutral at this position. While
measuring the neutral position, a light "up" pressure shall be maintained at the center of the aft
edge of the aileron, just sufficient to remove the slack between the bellcrank and the aileron.

Should the three points not contact, loosen the jam nut at the aft end of the control rod and
rotate the rod until the three points contact. After adjustment, retighten the jam nut.

Check the ailerons for correct travel from neutral per dimensions given in Table V-I by the
following procedure:

Center the bubble of a protractor over the surface of an aileron at neutral position and note the
reading.

Move the aileron full up and down and check the degree of travel for each direction. The
degree of travel on the protractor is determined by taking the difference between the protractor
reading at neutral and up, and neutral and down. The bubble must be centered at each reading.

Should the travel not be correct, the travel may be set by rotating the bellcrank stops in or out.
Stops are located in the wing attached to the rib that is adjacent to the aileron bellcrank.

Repeat this procedure for the other aileron.

If the aileron stops are bottomed before the control wheel is turned 90

1 degree from

centered position, lengthen the drive cable and shorten the balance cable an equal amount.
Recheck cable tension.

Check the bellcrank stops to assure that the bellcrank contact is made simultaneously but still have
cushion before contacting the control wheel stops. Models which have adjustable aileron tee bar
stops must maintain .030 to .040 clearance between the sprocket pin and the adjustable stop bolts
after the bellcranks contact their stops.

Check control operation and bolts and turnbuckles for safety.

Install access plates and panels.

NOTE: When an out-of-trim condition persists despite all the rigging corrections that can be made,

there is a possibility that the trailing edge of the aileron has been used to move the aircraft
forward. This can result in a slight bulging of the aileron contour at the trailing edge which
will cause an out-of-trim condition that is very difficult to correct.

Piper PA-34-200T Seneca II, Service Manual

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